Fishing tool



Patented Dec. 6, 1927.

' ERVIN:LponTrLEm-orlsArULPA, oxLA'I-Ioiv'fa.

"FISHING-moon.

`App;mation@mea rebmary 27,1926. semaine. 91,279.

i, This invention .relates to Working barrels and more particularly to,l supplemental work- Abarrels and vhas .-for-,-animportant object v thereof the construction of a/supplementary working barrelso-A that the same vmaybe readily withdrawn froma Well. y

Supplementary working barrels are barrelsemployedewithingtheusual working barrel when the usual working barrel becomes so worn that it will not operat-e properly. These supplementary working barrels are lonly inserted in the usual working barrel v where the conditions are such that removal of the working barrel is an extremely difl cult and expensive operation. For example, the casing, to the lower end of which the working barrel is attached, may be so Worn or rotted that it would be only possible to pull the same in sections and as a result ofextensive lishing operations. It will, therefore, be obvious that where these suppplementary working barrels are employed, some means must be provided for removing the supplementary working barrel in event the rod line, by means of which the working barrel of the supplementary barrel is operated, happens to part within the working barrel as sometimes occurs. A further object of the invention is to provide a construction of this character which may be employed with but a slight modification of the ordinary construction of the upper hea end of the supplementary barrel.

A further object of the invention is to provide a novel and improvedshing tool for coaction with the modified barrel head.

These and other objects I attain by the construction shown in the accompanying drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention and Wherein:--

Figure 1 is a vertical sectional view through the upper end of a working barrel constructed in accordance with my invention;

Figure 2 is a view showing the manner in whichthe socket engages the head of the barrel.

Referring now' more particularly to the drawings, the numeral 10 generally indicates a working barrel andl] the head therefor which is threaded into the upper end of the barrel. The head 11 is provided with oil openings 12 which are normally sealed by a cup-like washer 13 which is slidable on a stem 14 threaded through the head 11 axially V degree.

thereof. ,Y The vvalve 1.3 acts as a checlr,openl j mg Aas th-e Itraveling'valve"moves upwardly to permit udtofpass from the harreland then returning to prevent l this yfluid from 're-L turningto the barrel. The stem .14,by; its engagement with,thezheadpplovide whereby fthishead ,may bezs-eatedlzinth .upper endet the barrel .orlremnved therefrem so as to permit the traveling valve (not shown) to be withdrawn from the well for repacking.

As a means for rotating this stem, it provided with a head 15 formed with a ratchet shoulder 16. The stem 14 and its head are provided with an axial bore 17 for the passage of a valve stem 18 and this valve stem, the upper end of which engages the sucker rod line 19, has at its lower end an enlargement 20 provided with a similar ratchet shoulder 21 which may be engaged with the ratchet shoulder of the head 15 by lowering the valve stem to a predetermined The structure just described is a structure of the head of the supplementary working barrel known in the art as the Mc- Gregor barrel and forms no part of my invention except in combination with the modifications thereof, hereinafter to be ferred to.

In the constructionv of the-stemv 14, this stem is -made of greater length'and .diameter than the stemv ordinarily provided and the exterior of the head 15 thereof is provided with screw-threads 22 for coaction with threads 23 of a socket 24 and is made removable.` This socket is made of an external diameter equal to the external diameter of the barrel with which it is to be employed at its upper end and at its lower end is made of an external diameter slightly less than the internal diameter of the cup washer i 13 so that this lower end may project into ed for engagement with the usual sucker los rod line 19, replacing the broken fragment of the valve stem whichis withdrawn from the well. It will be obvious that by threading this socket upon the upper end of the barrel, the entire barrel may be Withdrawn. It is pointed out that the frictional engagement of the lower end of the socket with the cup Washer and the frictional engagement of this cup Washer with the upper end of the head will tend to prevent the stem 14 `and head l1 from separating yand thus to prevent accidental unscrewing of the barrel as the device is drawn from the Well.

Since the construction hereinbeforewenr ployed is capable of a certain range of change and modification Without materially departing from the-spirit of the invention7 I do not limit myself to such specific struc ture except as hereinafter claimed.

I claimz- A fishing tool for pullinga Working barlv rel comprising a head having-longitudinally extending ports, a cup valve for closing the ports, and a guide member for ,thel cup comprising a stem secured to the head and hav-` ing an eXteriorly threaded head at its upper end, said fishing tool comprising a socket having at its lower end an external diameter v,slightly less than the internal diameter of the cup valve and an internal' diameter slightly greater than the head of the stein,

In testimony WhereofI hereunto affix signature.

ERvlN' L. BOETTLEB; 

